* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #4338ca;
  --color-secondary: #312e81;
  --color-accent: #c7d2fe;
  --color-bg: #ffffff;
  --color-surface: #f5f3ff;
  --color-text: #1e1b4b;
  --color-text-muted: #6366a0;
  --color-border: #d4d0e8;
  --font-main: 'Georgia', 'Times New Roman', 'Palatino', serif;
  --max-width: 1100px;
  --radius: 2px;
}

body {
  font-family: var(--font-main);
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75em;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  position: relative;
  left: -3px;
}

h2 {
  font-size: 2.75rem;
  margin-top: 2rem;
  transform: translateX(-2px);
}

h3 {
  font-size: 2.15rem;
  margin-top: 1.75rem;
}

h4 {
  font-size: 1.65rem;
  margin-top: 1.5rem;
}

h5 {
  font-size: 1.35rem;
  margin-top: 1.25rem;
}

h6 {
  font-size: 1.1rem;
  margin-top: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  margin-bottom: 1.25em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
  position: relative;
}

a:hover {
  color: var(--color-secondary);
  border-bottom-color: var(--color-primary);
  background-color: var(--color-accent);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius);
}

strong {
  font-weight: 700;
  color: var(--color-secondary);
}

em {
  font-style: italic;
}

blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  background-color: var(--color-surface);
  border-left: 5px solid var(--color-primary);
  font-style: italic;
  position: relative;
  transform: translateX(15px);
}

blockquote::before {
  content: '';
  position: absolute;
  left: -10px;
  top: -10px;
  width: 30px;
  height: 30px;
  background-color: var(--color-accent);
  z-index: -1;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(67, 56, 202, 0.05);
}

.site-header .container {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 2rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  position: relative;
}

.site-header h1 {
  font-size: 1.75rem;
  margin: 0;
  color: var(--color-secondary);
  left: 0;
  transform: translateY(-2px);
}

.site-nav {
  justify-self: end;
  position: relative;
  top: 3px;
}

.site-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.site-nav a {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover {
  background-color: transparent;
  border-bottom-color: var(--color-primary);
}

.site-main {
  min-height: calc(100vh - 200px);
  position: relative;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.breadcrumbs {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.9rem;
  margin: 1.5rem 0;
  color: var(--color-text-muted);
  padding-left: 8px;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
}

.breadcrumbs a:hover {
  color: var(--color-primary);
  background-color: transparent;
}

.breadcrumbs::before {
  content: '';
  width: 3px;
  height: 20px;
  background-color: var(--color-primary);
  margin-right: 5px;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}

.card::after {
  content: '';
  position: absolute;
  top: -5px;
  right: -5px;
  width: 60px;
  height: 60px;
  background-color: var(--color-accent);
  border-radius: 50%;
  z-index: 0;
  opacity: 0.4;
  transition: opacity 0.2s ease;
}

.card:hover {
  box-shadow: 0 8px 24px rgba(67, 56, 202, 0.12);
  transform: translateY(-2px);
}

.card:hover::after {
  opacity: 0.7;
}

.card > * {
  position: relative;
  z-index: 1;
}

.card h2, .card h3 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  position: relative;
  left: -5px;
}

table thead {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}

table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  border-bottom: 2px solid var(--color-primary);
}

table td {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

table tbody tr {
  transition: background-color 0.2s ease;
}

table tbody tr:nth-child(odd) {
  background-color: var(--color-surface);
}

table tbody tr:hover {
  background-color: var(--color-accent);
}

details {
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
  overflow: hidden;
  position: relative;
  left: 10px;
}

summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-secondary);
  background-color: var(--color-surface);
  transition: background-color 0.2s ease, color 0.2s ease;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: transform 0.2s ease;
}

details[open] summary::after {
  content: '−';
  transform: rotate(90deg);
}

summary:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

details > *:not(summary) {
  padding: 1.5rem;
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  margin-top: 4rem;
  padding: 3rem 0 2rem;
  border-top: 4px solid var(--color-primary);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 5%;
  width: 150px;
  height: 40px;
  background-color: var(--color-accent);
  transform: skewX(-15deg);
}

.site-footer .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.site-footer a {
  color: var(--color-accent);
  border-bottom-color: var(--color-primary);
}

.site-footer a:hover {
  color: var(--color-bg);
  background-color: var(--color-primary);
  border-bottom-color: var(--color-bg);
}

.site-footer p {
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  h1 {
    font-size: 4.5rem;
    left: -5px;
  }

  h2 {
    font-size: 3.25rem;
    transform: translateX(-3px);
  }

  h3 {
    font-size: 2.5rem;
  }

  .site-header .container {
    gap: 3rem;
  }

  .site-nav ul {
    gap: 2.5rem;
  }

  .container {
    padding: 0 2rem;
  }

  .site-main {
    padding: 3rem 0;
  }

  .card {
    padding: 2.5rem;
  }

  blockquote {
    margin: 3rem 0;
    padding: 2rem 2.5rem;
    transform: translateX(25px);
  }

  table {
    left: -8px;
  }

  details {
    left: 15px;
  }

  .site-footer .container {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }

  .site-footer::before {
    left: 10%;
    width: 200px;
    height: 50px;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 19px;
  }

  h1 {
    font-size: 5.5rem;
    left: -8px;
  }

  h2 {
    font-size: 3.75rem;
    transform: translateX(-5px);
  }

  h3 {
    font-size: 2.85rem;
  }

  .site-main {
    padding: 4rem 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .card {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  blockquote {
    transform: translateX(40px);
    padding: 2.5rem 3rem;
  }

  blockquote::before {
    width: 40px;
    height: 40px;
    left: -15px;
    top: -15px;
  }

  table {
    font-size: 1rem;
    left: -10px;
  }

  details {
    left: 20px;
  }

  .site-footer .container {
    grid-template-columns: repeat(3, 1fr);
  }

  .site-footer::before {
    width: 250px;
    height: 60px;
    top: -25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  details > *:not(summary) {
    animation: none;
  }

  .card:hover {
    transform: none;
  }

  summary::after {
    transition: none;
  }
}

@media print {
  .site-nav {
    display: none;
  }

  .site-header {
    position: static;
    border-bottom: 1px solid #000;
    box-shadow: none;
  }

  .site-footer {
    border-top: 1px solid #000;
    background-color: transparent;
    color: #000;
  }

  .site-footer::before {
    display: none;
  }

  .breadcrumbs {
    display: none;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }

  .card::after {
    display: none;
  }

  table {
    break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  blockquote {
    break-inside: avoid;
    transform: none;
  }

  details {
    transform: none;
  }
}